Jet Fans For Tunnel Ventilation

The fans are in fact part of many concepts for firefighting.

Jet fans for tunnel ventilation.

In longitudinal ventilation all of the air enters and leaves through the ends of the tunnel and it is moved along the space by jet fans. Ventilation with tunnel jet fans has low construction costs and good space utilisation. Infinair tunnel ventilation metro tunnel jet fans yftnv airflow range 4 2 52 3 m s maximum thrust 3500 n direct driven ceiling hung sidewall mounted applications. Some system designs include axial flow fans for supply and or exhaust.

There are two fundamental systems of tunnel ventilation longitudinal and transverse. In tunnel ventilation throughout the world howden is the partner of choice. 2 tunnel fans jet fans cfd simulation systemair tunnel fans are developed in germany for a good reason. Since then our factory in windischbuch has become a.

Tunnel fans are designed for ventilation and smoke control in road and train tunnels. 400ºc 2h and 300ºc 2h certificates. Longitudinal tunnel ventilation systems provide airflow along the length of a tunnel. Extremely thick tubular sheet steel casing.

Extremely robust one way jet fan with cast aluminium rotor for medium thrusts. Mainly used in tunnels including metro tunnels road tunnels railway tunnels and underground car parks. Tunnel jet fan jet fans especially designed for tunnel ventilation. Jet fans can be uni directional type our jz series or fully reversible type our jzr.

They provide an effective way of handling polluted air and smoke from fires. Long range impulsion jet fans. Improving the efficiency of turbomachinery including jet fans used in tunnel ventilation systems is essential in combating the volatile cost of fuel and reducing emissions of greenhouse gases energy efficient equipment is also more attractive to worldwide transportation authorities. Robust single direction jet fan with cast aluminium.

Jet fans among all different tunnel ventilation systems the longitudinal ventilation with jet fans is the most extended one due to its flexibility and lower cost compared with transverse and semi transverse ventilation systems using axial fans. The jet fans have been developed for ventilation of tunnels with aggressive atmospheres such as road traffic and train tunnels. 400ºc 2h 300ºc 2h and 200ºc 2h certificates according to model powerful jet fans especially designed for tunnels ventilation for the smoke extraction in case of fire 400ºc 2h 300ºc 2h and 200ºc 2h according to model. They are needed to.

The jet fans use the impulse principle to move air through the tunnels in longitudinal direction. Typically the equipment is used for smoke extraction or control for the time it takes people to evacuate the tunnel under emergency conditions.